WO2006096822A2 - Transverse tape application method and apparatus - Google Patents
Transverse tape application method and apparatus Download PDFInfo
- Publication number
- WO2006096822A2 WO2006096822A2 PCT/US2006/008528 US2006008528W WO2006096822A2 WO 2006096822 A2 WO2006096822 A2 WO 2006096822A2 US 2006008528 W US2006008528 W US 2006008528W WO 2006096822 A2 WO2006096822 A2 WO 2006096822A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- web
- tape
- anvil
- traveling
- tabs
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/14—Associating sheets with webs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of pads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/57—Diaper manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1062—Prior to assembly
- Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
- Y10T156/1077—Applying plural cut laminae to single face of additional lamina
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
- Y10T156/1092—All laminae planar and face to face
- Y10T156/1097—Lamina is running length web
- Y10T156/1098—Feeding of discrete laminae from separate sources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
- Y10T156/1317—Means feeding plural workpieces to be joined
- Y10T156/1322—Severing before bonding or assembling of parts
- Y10T156/133—Delivering cut part to indefinite or running length web
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
- Y10T156/1702—For plural parts or plural areas of single part
- Y10T156/1744—Means bringing discrete articles into assembled relationship
- Y10T156/1776—Means separating articles from bulk source
- Y10T156/1778—Stacked sheet source
- Y10T156/178—Rotary or pivoted picker
Definitions
- the present invention relates to processes and apparatus for applying tabs to traveling webs, and more specifically to application of multiple tabs to a traveling web.
- the invention has particular applicability to the manufacture of disposable diapers.
- Window-knife applicators are comprised of : one or more rotating heads , each made up of a knife edge and a vacuum plate; a more or less stationary knife, which is configured with a hole (window) ; and a tape transfer mechanism.
- the rotating heads are mechanically configured so as to eliminate head rotation relative to the stationary knife.
- Each head is passed, once per cycle, across the face of the stationary window knife, through which the infeeding tape is passed.
- the rotating knife shears the extended length of tape against the sharp inner edge of the hole (window) , after which the severed segment is held by the vacuum plate .
- the rotating head with the segment of tape held in place by the vacuum plate, continues through its rotation to a point, usually 90 degrees later, where it contacts the traveling web, which is pressed against the exposed adhesive of the tape segment.
- This contact usually against some backing device, effects a transfer of the tape tab from the vacuum plate to the traveling web, which then carries the tape tab downstream.
- Window-knife applicators have a few shortcomings, among which are: the difficulty in feeding tape webs with little axial stiffness; the tendency of the infeeding tape to adhere to the window knife-edge; and for exposed adhesive to contaminate the surfaces of the window knife.
- some degree of interference between the cutting edges is necessary between the moving and stationary knife faces, so to minimize impact, precision in manufacturing must be maintained and provision must be made for a degree of resiliency.
- applicators of this type have been tested to speeds of 1000 cuts per minute, the maximum practical speed capability of current designs is approximately 750 cuts per minute.
- Slip-and-cut applicators are typically comprised of (a) a cylindrical rotating vacuum anvil (b) a rotating knife roll and (c) a transfer device.
- a tape web is fed at a relatively low speed along the vacuum face of the rotating anvil, which is moving at a relatively higher surface speed and upon which the tape web is allowed to "slip".
- a knife- edge mounted on the rotating knife roll, cuts a segment of tape from the tape web against the anvil face. This knife-edge is preferably moving at a surface velocity similar to that of the anvil's circumference.
- the tape tab is held by vacuum drawn through holes on the anvil's face as it is carried at the anvil's speed downstream to the transfer point where the tape segment is transferred to the traveling web.
- a common problem with slip-and-cut applicators lies in the tendency to accumulate various contaminants on their anvil surfaces.
- Contamination of the anvil whether by release compounds or by fugitive adhesive, interferes with the regularity of slip occurring between the tape and the anvil, causing registration and cut accuracy problems. Frequent cleaning is necessary to maintain any level of productivity.
- Continual improvements and competitive pressures have incrementally increased the operational speeds of disposable diaper converters. As speeds increased, the mechanical integrity and operational capabilities of the applicators had to be improved accordingly. As a further complication, the complexity of the tape tabs being attached has also increased. Consumer product manufacturers are offering tapes which are die-cut to complex profiles and which may be constructed of materials incompatible with existing applicators. For instance, a proposed tape tab may be a die-profiled elastic textile, instead of a typical straight-cut stiff-paper and plastic type used in the past. Consequently, a manufacturer may find itself with a window-knife applicator, which cannot feed a tape web with too little axial stiffness.
- the present invention has the added capability over the prior art of applying tape tabs to a running web of material at non-parallel feed positions.
- the invention provides the additional benefit of quiet operation compared to prior art equipment, which uses high speed cutting faces and suffers from the effects of the very high energy levels seen at the point of contact. Generally, these energies, and the sounds that they generate, increase in proportion to the square of the velocity.
- the present invention benefits from the relatively low speed of the cutting faces and exhibits extremely low noise levels. In fact, the underlying noise of the mechanical drive systems and the traveling web equipment contribute to make the cutting noise level nearly unnoticeable .
- the present invention provides a simplified process wherein a rotary knife or die, with one or more cutting edges, turns against and in coordination with a corresponding vacuum anvil cylinder.
- An infeeding tape web is fed along the surface of the anvil, which is rotating at a surface velocity equal to or only somewhat greater than that of the tape web.
- segments of tape are parted but not significantly displaced upon the anvil surface. The segments continue downstream on the anvil surface, held securely by forces induced by a vacuum source directed to one or more holes provided for each segment in the anvil surface .
- the traveling web to which the segments are to be attached is brought into close proximity with the anvil and its tape segments.
- the traveling web is proceeding at a non-parallel angle and direction to the rotational direction of the anvil.
- a mechanically operated device which may be as simple as a protuberance on a rotating cylinder, presses the target zone of the traveling web against the exposed adhesive of the tape segment as it is presented on the anvil surface.
- the protuberance preferably has a surface velocity substantially identical to that of the traveling web.
- each successive segment is successfully transferred to the traveling web, accelerating almost instantly to the speed of the trave1ing web .
- a key aspect of this invention lies in the method and apparatus used to affect the transfer of the tape segments from the anvil to the traveling web.
- a vacuum commutation system is configured to remove or reduce the level of vacuum used to hold each tape segment to the anvil surface just before the point of transfer.
- the materials and finishes selected for the anvil and the transfer protuberances provide a situation in which the coefficient of friction between the protuberances and the traveling web is relatively high, while the coefficient of friction between the tape segment and the anvil is relatively low.
- the highly aggressive nature of the bond between the adhesive side of the tape segment and the target surface of the traveling web ensures that there is virtually no slippage between the two.
- the present invention allows for placement of tape onto areas of the disposable garment perpendicular to or at another non-parallel angle to the waistband of the disposable garment. For instance, training pants for babies typically have a removable panel in the rear of the diaper. A soiled panel is removed from the pants and rolled up and secured with the fastening tapes.
- the present invention provides for a method to apply the transverse fastening tapes to the diaper. Likewise, the present invention provides a method to attach tapes to the sides of garments that are manufactured according to a transverse process.
- Figure 1 is an overhead diagrammatic view of tape being applied according to the prior art.
- Figure 2 is an overhead diagrammatic view of tape being applied according to the present invention.
- Figure 3 is a perspective view illustrating an embodiment of the invention.
- Figure 4 is a front elevational view of the equipment of figure 3.
- Figure 5 is a perspective view of the present invention applied to an undergarment.
- Figure 6 is an overhead diagrammatic view of an alternate embodiment of the present invention. Description of the Preferred Embodiment
- Figure 1 shows an overhead view of a web of traveling material 10 having tape tabs 12 applied to the web 10 according to the prior art.
- the tape tabs 12 are applied from an anvil carrying an adhesive material (not shown) that rotates in the same direction as the movement of the web 10.
- the tabs 12 are placed so that the tabs 12 are attached perpendicular to the web 10.
- Figure 2 is an overhead view of the improvement of the present invention.
- the tabs 12 are attached parallel to the moving web 10.
- the change in orientation is possible since an anvil that carries the adhesive tape 12 rotates in a direction perpendicular to the moving web 10. The advantages of such an arrangement will be discussed later.
- Two separate anvils contacting the web 10 apply the tape 12, with one anvil coming in contact with each edge of the web 10.
- FIG 3 there is shown, a simplified device in accordance with the invention, illustrating the application of tabs 52 and 54, which have free ends extending parallel from opposite sides of a diaper- forming web 50.
- tabs 52 and 54 may be provided with loops on one side of the diaper-forming material and hooks on the opposite side to form hook and loop fasteners on the diapers commonly referred to as Velcro ® .
- the tabs on at least one side may be coated with a pressure sensitive adhesive protected until use by a release layer.
- an adhesive- coated tape web 61 is fed over a roller 64 onto an anvil 60.
- the web 61 is fed to the anvil 60 at a speed such that the web speed of web 61 approximately equals the speed at which the outer periphery of anvil 60 is traveling. If desired, the anvil 60 may rotate at a slightly higher speed than the linear speed of the web 61. Blades 56 of a rotary cutter 58 are also traveling at a peripheral speed equal to that of anvil 60.
- a series of tabs 52 are carried on the outer surface of anvil 60. Tabs 52 are held in place by vacuum provided within the interior of anvil 60.
- the adhesive-coated surface of web 61 is facing outwardly while a non-tacky or uncoated surface engages the exterior anvil 60.
- a similar anvil 62 engages a second adhesive- coated web 66.
- the webs 61 and 66 may have adhesive coated on one-half of their width and a hook or loop-type fastener provided on the opposite half of the width in order to form the laterally extending tabs 52 and 54.
- Blades 56 of rotary cutter 58 and blades 57 of a second rotary cutter 59 cut the webs 61 and 66, respectively.
- the cutters 58 and 59 are driven by respective rotatable shaft 68 and 70.
- anvils 60 and 62 are driven by respective central shaft 72 and 74.
- Rotatable disks 76 and 78 provided with protrusions 80 and 82 serve to deflect the edges of the web 50 toward the respective anvils 60 and 62 in order to simultaneously pick up the tabs 54 and 52 on opposite sides of the web 50, as shown.
- Figure 4 shows a front elevation view of the apparatus of Figure 3.
- the incoming webs 61 and 66 are fed to the rollers 64 and 84.
- the webs 61 and 66 travel further to come into contact with the anvils 60 and 62.
- the webs 61 and 66 are fed to the anvils 60 and 62 at a speed such that the web speed of the webs 61 and 66 approximately equals the speed at which the outer periphery of 60 and 62 are traveling. If desired, the anvils 60 and 62 may rotate at a slightly higher speed than the linear speed of the webs 61 and 66. The blades 56 and 57 of the rotary cutters 58 and 59 are also traveling at a peripheral speed equal to that of anvils 60 and 62. As seen in Figure 4, after cutting, a series of tabs 52 and 54 are carried on the outer surfaces of the anvils 60 and 62. Tabs 52 and 54 are held in place by vacuum provided within the interiors of anvils 60 and 62. The adhesive-coated surface of the webs 61 and 66 are facing outwardly while a non-tacky or uncoated surface engages the exterior of the anvils 60 and 62.
- the web 50 of diaper material is caused to travel in a path slightly displaced from the outer surface of the rotating anvils 60 and 62, but in close proximity thereto.
- the rotating wheels 76 and 78 which rotates at a peripheral velocity equal to the lineal velocity of web 50, which, in turn, is substantially greater than the peripheral velocity of the anvils 60 and 62.
- the anvils 60 and 62 may travel at a peripheral velocity either equal to or somewhat greater than the velocity of web 50.
- the peripheral velocity of anvils 60 and 62 should not be greater than about 5 times the velocity of web 50.
- the protrusions 80 and 82 located on the wheels 76 and 78 depress the web 50, causing the web 50 to come into contact with the anvils 60 and 62, which adheres the tabs 52 and 54 to the web 50.
- a shaft 86 that controls the wheels 76 and 78 is aligned perpendicular to the shafts 72 and 74, which allows the tabs 52 and 54 to be placed in the parallel fashion shown in Figure 3.
- the invention is shown having one protrusion 80 and 82 on each wheel 76 and 78, the invention may also be used having two or more protrusions located on the wheels. Likewise, the invention may be used with only one wheel instead of two.
- the anvils 60 and 62 are shown rotating in the same direction, but it may be possible to arrange the anvils so that they are rotating in opposite directions if preferred, thereby allowing the same relative edges of the tabs 52 and 54 to be placed on the web 50 in the same manner.
- a disposable undergarment 100 is considered.
- the garment 100 has a releasable flap 102 located on the rear 104 of the undergarment 100.
- the present invention allows placement of the tabs 52 onto the flap 102 in a parallel fashion, which allows the flap 102 to be opened or closed. Such an arrangement is useful for children to check if the undergarment 100 has been soiled. If the undergarment 100 has been soiled, the arrangement allows for the soiled flap 102 to be rolled up and secured with the tabs 52.
- FIG. 6 represents a diagrammatic view of such an arrangement.
- the tabs 12 are placed onto the web of material 10 at approximately a 45E angle. The angle may adjusted so that the tabs 12 may be placed on the web 10 so that the tabs 12 may lie between any angle parallel to perpendicular to the traveling web 10.
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Wire Bonding (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2600432A CA2600432C (en) | 2005-03-09 | 2006-03-09 | Transverse tape application method and apparatus |
EP06737684A EP1868821B1 (de) | 2005-03-09 | 2006-03-09 | Verfahren und vorrichtung zur anbringung eines querlaufenden bandes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65978505P | 2005-03-09 | 2005-03-09 | |
US60/659,785 | 2005-03-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006096822A2 true WO2006096822A2 (en) | 2006-09-14 |
WO2006096822A3 WO2006096822A3 (en) | 2007-11-01 |
Family
ID=36954031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/008528 WO2006096822A2 (en) | 2005-03-09 | 2006-03-09 | Transverse tape application method and apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US7452436B2 (de) |
EP (1) | EP1868821B1 (de) |
CA (1) | CA2600432C (de) |
WO (1) | WO2006096822A2 (de) |
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US8417374B2 (en) | 2004-04-19 | 2013-04-09 | Curt G. Joa, Inc. | Method and apparatus for changing speed or direction of an article |
US7640962B2 (en) * | 2004-04-20 | 2010-01-05 | Curt G. Joa, Inc. | Multiple tape application method and apparatus |
US7638014B2 (en) | 2004-05-21 | 2009-12-29 | Curt G. Joa, Inc. | Method of producing a pants-type diaper |
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US8663411B2 (en) | 2010-06-07 | 2014-03-04 | Curt G. Joa, Inc. | Apparatus and method for forming a pant-type diaper with refastenable side seams |
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- 2006-03-09 CA CA2600432A patent/CA2600432C/en active Active
- 2006-03-09 EP EP06737684A patent/EP1868821B1/de active Active
- 2006-03-09 US US11/371,468 patent/US7452436B2/en active Active
- 2006-03-09 WO PCT/US2006/008528 patent/WO2006096822A2/en active Search and Examination
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Also Published As
Publication number | Publication date |
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WO2006096822A3 (en) | 2007-11-01 |
CA2600432C (en) | 2013-07-16 |
US7452436B2 (en) | 2008-11-18 |
EP1868821B1 (de) | 2013-01-30 |
EP1868821A2 (de) | 2007-12-26 |
EP1868821A4 (de) | 2010-06-16 |
CA2600432A1 (en) | 2006-09-14 |
US20060201619A1 (en) | 2006-09-14 |
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